CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

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PRODUCT DATASHEET

ChipNobo MPN

NB41T81SMY6E

GLOBAL BRAND CROSS-REFERENCE

STMicroelectronics

IC RTC CLK/CALENDAR I2C 18SOX

M41T81SMY6E

  • High-reliability design
  • Long-term stable supply
  • RoHS compliant
IC RTC CLK/CALENDAR I2C 18SOX

1. PRODUCT POSITIONING

NB41T81SMY6E is a product identity corresponding to the reference product M41T81SMY6E. This document presents the available product specifications, mechanical/package information and compatibility summary for engineering and procurement reference.

This document is a product information. Compatibility conclusions should be read together with the applicable Cross-Reference Identification (CID) rule, package/pin verification and engineering review record.

2. TECHNICAL SPECIFICATION COMPARISON (core parameters)
Parameter STMicroelectronics M41T81SMY6E ChipNobo NB41T81SMY6E Match
Part Status Active Active ✓
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C ✓
Mounting Type Surface Mount Surface Mount ✓
Programmable Not Verified Not Verified ✓
Type Clock/Calendar Clock/Calendar ✓
Date Format YY-MM-DD-dd YY-MM-DD-dd ✓
Voltage - Supply 2.7V ~ 5.5V 2.7V ~ 5.5V ✓
Time Format HH:MM:SS:hh (24 hr) HH:MM:SS:hh (24 hr) ✓
Interface I2C, 2-Wire Serial I2C, 2-Wire Serial ✓
Voltage - Supply, Battery 2V ~ 3.5V 2V ~ 3.5V ✓
Features Alarm Leap Year Square Wave Output Watchdog Timer Alarm Leap Year Square Wave Output Watchdog Timer ✓
Current - Timekeeping (Max) 100µA @ 2.7V ~ 5.5V 100µA @ 2.7V ~ 5.5V ✓
Package / Case 18-SOX, 18-SOIC with Crystal (7.5mm Width) 18-SOX, 18-SOIC with Crystal (7.5mm Width) ✓
Supplier Device Package 18-SOX 18-SOX ✓
RoHS Status ROHS3 Compliant ROHS3 Compliant ✓
Moisture Sensitivity Level (MSL) 3 (168 Hours) 3 (168 Hours) ✓
3. SUPPLY & LIFECYCLE
ChipNobo Number NB41T81SMY6E
Lifecycle status Active
NRND No
EOL No
PCN monitor No
Last buy date No Deadline
Alternate availability Sufficient

CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

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PRODUCT DATASHEET

4. APPLICATION AREAS
AI Server GPU Server
Data Center Switch Vehicle Communication Network (CAN/CAN FD/LIN)
Smart Cockpit Industrial Computer
PLC Controller Semiconductor Equipment
5G Base Station IoT Gateway
Medical Monitoring Equipment Smart Home Gateway

5. ENGINEERING & COMMERCIAL NOTES

  • The ChipNobo MPN is the public product identity used by ChipNobo for this replacement reference.
  • The original manufacturer and original MPN are retained as reference identity information.
  • Product PDF data are intended for engineering, procurement and supply-continuity reference.
  • Current price, MOQ, lead time, available supply source and regional availability should be confirmed through RFQ.
  • For customer-specific qualification, PCB footprint approval, reliability requirements or design-in approval, the customer should perform the applicable validation process.

CHIPNOBO REPLACEMENT · Semiconductor Replacement Engineering & Supply Continuity Partner

Document purpose: Product Information / Replacement Reference · Generated from the product data supplied for NB41T81SMY6E.

Important Notice & Disclaimer

Document ID: 【CN-DATA-NB41T81SMY6E】 Revision: 1.0 Status: Released

The information provided by ChipNobo is intended solely for engineering evaluation, product selection, procurement, and supply continuity reference purposes. Product specifications, lifecycle status, availability, and other information are subject to change without notice. Customers should always verify relevant information against the latest official documentation published by the respective manufacturers.

Cross-reference and replacement recommendations are provided for engineering reference purposes only. They do not constitute a guarantee of pin-to-pin compatibility, interchangeability, or suitability for any particular application. Customers are responsible for conducting all necessary engineering reviews, testing, and qualification prior to product selection and use.

Manufacturer names, trademarks, and part numbers are referenced solely for product identification purposes. Their use does not imply any affiliation with, endorsement by, or authorization from the respective manufacturers, unless expressly stated otherwise.

To the maximum extent permitted by applicable law, ChipNobo makes no warranties, express or implied, regarding the completeness, accuracy, or suitability of the information provided and shall not be liable for any loss or damage arising from its use or reliance, except as otherwise expressly agreed in writing and subject to applicable law.